| HEI coil failure (a nod to KenH) [message #253971] |
Tue, 01 July 2014 09:59  |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma:
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Yesterday, I was doing some these days rare paying work, and my wife called.
There was a 26' GMC stopped on the shoulder of the local interstate and it was clear that they were having difficulty. I abandon what I was doing and got in the car and pulled up behind their coach.
John and I discussed things for just a moment and He mentioned that he could not easily check for spark because of both the noise and shake of the passing trucks. He also mentioned that it just shutdown. No studder, not slow loss of power....
We opened the air intake and it was obvious that fuel was not the issue. Now with two of us, he cranked the engine and I held a plug wire (on a screwdriver) near a cylinder head cover and there was nothing....
He had an ignition module in spares. He screwed that in. Still Nothing.....
We got in my car an ran about a couple miles to the nearby parts store and he bought both a coil and a module.
When the new coil was in place and things closed up. A twist of the key and the right sounds came out.
As a side note, by the time the existing coil was removed, they had been stopped for over an hour and the removed coil was still very warm. This was also a relatively new distributor.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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